English version

work your butt/ass/arse off

From Longman Dictionary of Contemporary Englishwork your butt/ass/arse offwork your butt/ass/arse offnot polite to work very hard work
Examples from the Corpus
work your butt/ass/arse offIn short, I worked my butt off.I work my butt off for you, while that restaurant is doing worse and worse.You could have worked your butt off helping a rep and you finally got the rep doing everything right.I worked my butt off in basketball and stayed on the varsity-in fact, did well.Meanwhile, Inspiral Carpets went in at grass roots level and worked their butts off in the clubs.I had to give the ball up, and then I had work my butt off to get it back.
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